File size: 5,071 Bytes
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#include "Wav.hpp"
Wav::Wav(const wchar_t* Path) :header(WAV_HEADER()) {
char buf[1024];
FILE* stream;
_wfreopen_s(&stream, Path, L"rb", stderr);
if (stream == nullptr) {
throw (std::exception("File not exists"));
}
fread(buf, 1, HEAD_LENGTH, stream);
int pos = 0;
while (pos < HEAD_LENGTH) {
if ((buf[pos] == 'R') && (buf[pos + 1] == 'I') && (buf[pos + 2] == 'F') && (buf[pos + 3] == 'F')) {
pos += 4;
break;
}
++pos;
}
if (pos >= HEAD_LENGTH)
throw (std::exception("Don't order fried rice (annoyed)"));
header.ChunkSize = *(int*)&buf[pos];
pos += 8;
while (pos < HEAD_LENGTH) {
if ((buf[pos] == 'f') && (buf[pos + 1] == 'm') && (buf[pos + 2] == 't')) {
pos += 4;
break;
}
++pos;
}
if (pos >= HEAD_LENGTH)
throw (std::exception("Don't order fried rice (annoyed)"));
header.Subchunk1Size = *(int*)&buf[pos];
pos += 4;
header.AudioFormat = *(short*)&buf[pos];
pos += 2;
header.NumOfChan = *(short*)&buf[pos];
pos += 2;
header.SamplesPerSec = *(int*)&buf[pos];
pos += 4;
header.bytesPerSec = *(int*)&buf[pos];
pos += 4;
header.blockAlign = *(short*)&buf[pos];
pos += 2;
header.bitsPerSample = *(short*)&buf[pos];
pos += 2;
while (pos < HEAD_LENGTH) {
if ((buf[pos] == 'd') && (buf[pos + 1] == 'a') && (buf[pos + 2] == 't') && (buf[pos + 3] == 'a')) {
pos += 4;
break;
}
++pos;
}
if (pos >= HEAD_LENGTH)
throw (std::exception("Don't order fried rice (annoyed)"));
header.Subchunk2Size = *(int*)&buf[pos];
pos += 4;
StartPos = pos;
Data = new char[header.Subchunk2Size + 1];
fseek(stream, StartPos, SEEK_SET);
fread(Data, 1, header.Subchunk2Size, stream);
if (stream != nullptr) {
fclose(stream);
}
SData = reinterpret_cast<int16_t*>(Data);
dataSize = header.Subchunk2Size / 2;
}
Wav::Wav(const Wav& input) :header(WAV_HEADER()) {
Data = new char[(input.header.Subchunk2Size + 1)];
if (Data == nullptr) { throw std::exception("OOM"); }
memcpy(header.RIFF, input.header.RIFF, 4);
memcpy(header.fmt, input.header.fmt, 4);
memcpy(header.WAVE, input.header.WAVE, 4);
memcpy(header.Subchunk2ID, input.header.Subchunk2ID, 4);
header.ChunkSize = input.header.ChunkSize;
header.Subchunk1Size = input.header.Subchunk1Size;
header.AudioFormat = input.header.AudioFormat;
header.NumOfChan = input.header.NumOfChan;
header.SamplesPerSec = input.header.SamplesPerSec;
header.bytesPerSec = input.header.bytesPerSec;
header.blockAlign = input.header.blockAlign;
header.bitsPerSample = input.header.bitsPerSample;
header.Subchunk2Size = input.header.Subchunk2Size;
StartPos = input.StartPos;
memcpy(Data, input.Data, input.header.Subchunk2Size);
SData = reinterpret_cast<int16_t*>(Data);
dataSize = header.Subchunk2Size / 2;
}
Wav::Wav(Wav&& input) noexcept
{
Data = input.Data;
input.Data = nullptr;
memcpy(header.RIFF, input.header.RIFF, 4);
memcpy(header.fmt, input.header.fmt, 4);
memcpy(header.WAVE, input.header.WAVE, 4);
memcpy(header.Subchunk2ID, input.header.Subchunk2ID, 4);
header.ChunkSize = input.header.ChunkSize;
header.Subchunk1Size = input.header.Subchunk1Size;
header.AudioFormat = input.header.AudioFormat;
header.NumOfChan = input.header.NumOfChan;
header.SamplesPerSec = input.header.SamplesPerSec;
header.bytesPerSec = input.header.bytesPerSec;
header.blockAlign = input.header.blockAlign;
header.bitsPerSample = input.header.bitsPerSample;
header.Subchunk2Size = input.header.Subchunk2Size;
StartPos = input.StartPos;
SData = reinterpret_cast<int16_t*>(Data);
dataSize = header.Subchunk2Size / 2;
}
Wav& Wav::operator=(Wav&& input) noexcept
{
destory();
Data = input.Data;
input.Data = nullptr;
memcpy(header.RIFF, input.header.RIFF, 4);
memcpy(header.fmt, input.header.fmt, 4);
memcpy(header.WAVE, input.header.WAVE, 4);
memcpy(header.Subchunk2ID, input.header.Subchunk2ID, 4);
header.ChunkSize = input.header.ChunkSize;
header.Subchunk1Size = input.header.Subchunk1Size;
header.AudioFormat = input.header.AudioFormat;
header.NumOfChan = input.header.NumOfChan;
header.SamplesPerSec = input.header.SamplesPerSec;
header.bytesPerSec = input.header.bytesPerSec;
header.blockAlign = input.header.blockAlign;
header.bitsPerSample = input.header.bitsPerSample;
header.Subchunk2Size = input.header.Subchunk2Size;
StartPos = input.StartPos;
SData = reinterpret_cast<int16_t*>(Data);
dataSize = header.Subchunk2Size / 2;
return *this;
}
Wav& Wav::cat(const Wav& input)
{
if (header.AudioFormat != 1) return *this;
if (header.SamplesPerSec != input.header.bitsPerSample || header.NumOfChan != input.header.NumOfChan) return *this;
char* buffer = new char[(int64_t)header.Subchunk2Size + (int64_t)input.header.Subchunk2Size + 1];
if (buffer == nullptr)return *this;
memcpy(buffer, Data, header.Subchunk2Size);
memcpy(buffer + header.Subchunk2Size, input.Data, input.header.Subchunk2Size);
header.ChunkSize += input.header.Subchunk2Size;
header.Subchunk2Size += input.header.Subchunk2Size;
delete[] Data;
Data = buffer;
SData = reinterpret_cast<int16_t*>(Data);
dataSize = header.Subchunk2Size / 2;
return *this;
}
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